Sachana, C. S. “An Efficient Technique of Wavelength Severance of Sodium Doublet Lines Using Diffraction Grating”. Asian Journal of Science and Applied Technology 7, no. 2 (October 27, 2018): 38–40. Accessed May 1, 2024. https://ojs.trp.org.in/index.php/ajsat/article/view/1032.